Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
A minor decrease in the average high-temperature is observed in Seaford during December, shifting from a moderate 55.4°F (13°C) in November to a frosty 47.5°F (8.6°C). Seaford, in December, witnesses an average low-temperature of 36°F (2.2°C).Humidity
In Seaford, Delaware, the average relative humidity in December is 78%.Rainfall
In December, the rain falls for 6 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 95.8 rainfall days, and 8.03" (204mm) of precipitation is accumulated.Snowfall
Months with snowfall in Seaford are January through March, November and December. In Seaford, Delaware, during December, snow falls for 0.9 days and regularly aggregates up to 0.12" (3mm) of snow. In Seaford, during the entire year, snow falls for 5.6 days and aggregates up to 0.94" (24mm) of snow.Daylight
The month with the shortest days in Seaford is December, with an average of 9h and 30min of daylight.On the first day of December in Seaford, sunrise is at 7:01 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:51 pm EST.
Sunshine
The average sunshine in December in Seaford is 5.2h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Seaford in December?
What is the average humidity in December in Seaford?
How many days does it rain in December in Seaford?
How many days does it snow in December in Seaford?
What is the month with the shortest days in Seaford?
How many hours of daylight does Seaford have in December?
When are sunrise and sunset in December in Seaford?
How long on average sun shines in December in Seaford?
What is the month with the lowest UV index in Seaford?
What is the UV index reading in December in Seaford?
Average temperature in December
Seaford, DE
- Average high temperature in December: 47.5°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Seaford, DE
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Seaford, DE
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is February (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Seaford, DE
- Average humidity in December: 78%
The months with the highest relative humidity are May, August and September (80%).
The month with the lowest relative humidity is January (74%).
Average rainfall in December
Seaford, DE
- Average rainfall in December: 0.59"
The wettest months (with the highest rainfall) are July and August (1.06").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in December
Seaford, DE
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (12 days).
The month with the least rainy days is November (4.9 days).
Average snowfall in December
Seaford, DE
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Seaford, DE
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is January (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Seaford, DE
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Seaford, DE
- Average sunshine days in December: 23.8 days
The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in December
Seaford, DE
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Seaford, DE
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Seaford, DE
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Seaford, Delaware, USA
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